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Features:module uses S8050 triode driveworking voltage 3.3V-5Vwith fixed bolt holes for easy install..
Ex Tax: $2.88
Features:No oscillation source,need square wave(frequency 2K-5K ) to drive Work Voltage:3..
Ex Tax: $3.00
Characteristics:Plugs right into your mother where the speaker hooks up.keep the cable tidy internal..
Ex Tax: $6.90